How to introduce x400 to a sealed system

[Wangerman]

Hi guys you must all hate me by now with all my stupid boring questions

Anyway here goes again (sorry)

Spoke to my plumber mate again today about when he can do my boiler swap. He said I could do him a favour and put some x400 in the system before he flushes it next weekend no problem I said

So I look around and will probably get some from plumb centre tomorrow however how do you get the damn stuff into a sealed system ?

From what I have read a litre will suffice but I have no filling loop as such on my old system somebody has just connected up the cold main to central heating return to top up the boiler using a stop cock in sweated joints so I can't introduce there

If I take off a rad and drain it down can't figure out how to pour it in the rad and connect it up again without it all coming out again.

Looked at the rapid dose which says you can squirt it in via the bleed nipple but does it come with the adaptor and hose to connect it to the can or is it an extra and is it more concentrated or do I need more cans ?

as always forever in your debt

 

[joe-90]

Get a filling kit from Screwfix (£3.50) then take out the radiator bung at the opposite end to the bleed screw and screw it in.

 

[stevw451]

fernox do a one that comes with a nozzle

 

[seco services]

release the system pressure and drain rad first.

 

[Wangerman]

Wow that was quick

Thanks guys

 

[garethpa]

as it's a boiler swap anyway, wouldn't X800 be more effective? X400 can take a good couple of weeks to do a decent job